ORD is currently having ground delays around 1 hour and 4 minutes due to WX / LOW CIGS. (Source: FAA)
Flight Delay Summary
Based on 7942 flights from 05/01/2008 to 05/31/2009
59%
On Time
15%
5-20 min. Delay
24%
>20 min. Delay
3%
Cancelled/Diverted
Average
(median)
Be Prepared For
(85th percentile)
Cancelled
or diverted
In Good Weather...
4 min. early
22 min. late
2%
In Bad Weather...
5 min. late
59 min. late
4%
In Fog... (6%)
24 min. late
102 min. late
9%
In Rain... (39%)
7 min. late
65 min. late
4%
In Snow... (18%)
5 min. late
52 min. late
4%
In Thunder... (13%)
14 min. late
95 min. late
7%
“Be Prepared For”
gives the longest delay you can reasonably expect to occur.
Only the unluckiest 15 percent of flights experience longer delays.
Current weather is 50.0 F (10.0 C) and Fog/Mist, 93% humidity, and 3.00 miles visibility at CHICAGO OHARE INTL AP, US, IL as of Wed, 10 Mar 2010 08:51:00 -0600.